These photographers may have never known the significance of the pictures they took and that millions would be marveling at them in the future. A rare and fascinating look at how different (and similar) life used to be.
My cousin's drama teacher did this. But, they knew about it before the test while the teacher didn't know that they knew. When everyone was done, they all stood up and sang bohemian rhapsody together. The teacher gave each student 15 points.